MARLEY OPTIM® DWV SANITARY SYSTEMS - Technical Design Manual - Introduction - Section 1: PVC Pipe Properties

Oct 25, 2026

MARLEY OPTIM® DWV sanitary systems technical design manual provides a practical guide for designing, installing, and operating unplasticised PVC (PVC-U) pipeline systems for the conveyance of foul water. It introduces the second edition’s alignment with consolidated AS/NZS standards and summarizes why PVC DWV is used for corrosion resistance and strength-to-weight efficiency. The manual also details PVC pipe material properties, including mechanical, electrical, thermal, and flammability characteristics, plus service temperature, durability, weatherability, and impact strength requirements.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages52

Reading Time2 h 11 min

AccessFree to download

Introduction

SECTION 1: PVC Pipe Properties

1.1 Mechanical Properties of PVC @ 20°C

1.2 Electrical Properties

1.3 Thermal Properties

1.4 Flammability Characteristics

1.5 Service Temperature

1.6 Durability

1.7 Weatherability

1.8 Impact Strength

MARLEY OPTIM® DWV SANITARY SYSTEMS Technical Design Manual MAKE IT MARLEY QUALITY ASSURANCE • Rigorous quality testing • IANZ accredited onsite laboratory CERTIFICATION • Made to AS/NZS 1260 Standard • ISO 9001 accreditation PROVEN RELIABILITY • Over 30 years experience • Manufactured for the NZ market FULL RANGE • Over 300 pipes and fittings • Compatible system SUPPORT • Nationwide Territory Managers • Award-winning customer service RECYCLABLE • uPVC recycling programme • ISO 14001 certified Introduction This is the second edition of the Marley New Zealand Ltd DWV Installation and Technical Catalogue. It provides a practical guide to the design, installation and operation of unplasticised polyvinyl chloride (PVC) pipelines used for the conveyance of foul water. Its revision has been prompted by the amalgamation of the New Zealand and Australian Standards, which has resulted in two key documents; AS/NZS 1260 PVC pipes and fittings fordrain waste and vent, AS/NZS 3500.2.2 Sanitary plumbing and drainage-acceptable solutions Installation method. Since the introduction of PVC Pipes into the New Zealand plumbing and drainage market over three decades ago, PVC DWV pipe has become an integral link in foul water drainage systems in this country. PVC pipe has proven to be the most competitive in cost, with ease of installation combined with its physical characteristics of corrosion resistance and high strength to weight ratio, justifying its selection as the prime material option for drainage networks. Over the last fifteen years extensive research and development has resulted in continual improvements in processing techniques, quality control and behavioural understanding of the material. Users of PVC pipes and fittings manufactured to AS/NZS 1260 are assured of consistently high quality products which, in addition to their traditional characteristics, now have enhanced toughness. This second edition reflects the changes in specifications and materials which have taken place since the first edition was produced. We trust you will find this design manual informative and a key point of reference in conducting any aspect of design, installation or sale. D W V T E C H N I C A L D E S I G N M A N U A L INTRODUCTION SECTION 1 : P V C P IPE PROPERTIES 1. PVC Pipe Properties MATERIAL PROPERTIES 1.1 Mechanical Properties of PVC @ 20oC Density 1.42-1.48 Water Absorption 0. 12% in 24 hours @ 23o Hardness (Shore D) 80 Impact 20oC (Charpy 250µm notch) 20 KJ/m2 (PVC) Impact 0o (Charpy 250µm notch) 8 KJ/m2 (PVC) Coefficient of Friction (PVC to PVC) 0.4 Ultimate Tensile Strength 52 MPa Elongation at Break 50-80% Short Term Rupture 44 MPa Long Term Creep 28 MPa Compressive Strength 65 MPa Long Term Creep Modulus 0.9-1.2 GPa Elastic Tensile Modulus 3.0-3.3 GPa Elastic Flexural Modulus 2.7-3.0 GPa Shear Modulus 1.0 GPa Bulk Modulus 4.7 GPa Poison Ratio 0.4 1.2 Electrical Properties Dielectric Strength 14-20 KV/mm Volume Resistivity 2 x 1014 W.m Surface Resistivity 1013 -1014 W Dielectric Constant 50Hz (106 Hz) 3.9 (3 .3) Power Factor 50Hz (106 Hz) 0.01 (0 .02) Voltage Breakdown 2000 volts/mm Insulating Strength > 500 MW 1.3 Thermal Properties Softening Point 79-84oC Maximum Continuous Service Temp 60°C Coefficient of Thermal Expansion 8 x 10-5 Thermal Conductivity 0.16 W/[m.oC] Specific Heat 1000 J/[Kg. oC] Thermal Diffusivity 1.1 x 10-7 m2/S 1.4 Flammability Characteristics Flammability (Oxygen Index) 45% IgSHSnmeapritaboket EeadvilPiloveFIndlecmIeInIexx}AS 1530 Early Fire Hazard --160(/(/2100)) * PVC is self extinguishing. It does not support combustion when the source of ignition is removed. D W V T E C H N I C A L D E S I G N M A N U A L 1. PVC Pipe Properties PIPE PROPERTIES 1.5 Service Temperature All Marley drains, wastes and vents are suitable for the continuous discharge of liquids at tempera

FAQs

What is the purpose of this technical design manual?

It serves as a practical guide to the design, installation, and operation of unplasticised PVC (PVC) pipelines used for conveying foul water. It also acts as a reference for relevant design and installation activities.

Which standards does the manual reference for PVC pipes and installations?

It states compliance with AS/NZS 1260 for PVC pipes and fittings for drain waste and vent, and AS/NZS 3500.2.2 for sanitary plumbing and drainage acceptable solutions installation method. It also cites testing to AS/NZS 1260 and AS/NZS 1462.3 for impact strength.

What temperature limits are given for continuous and intermittent discharge?

The manual indicates suitability for continuous discharge up to 60°C for vertical and grade pipes. It allows intermittent discharges up to 90°C where the duration does not exceed 90 seconds, and restricts use above 75°C for continuous discharge.

Oct 25, 2026

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